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1. 发明申请

US20210254560A1 EXHAUST VALVE DEVICE FOR VEHICLE 有权
公开(公告)号：US20210254560A1
公开(公告)日：2021-08-19
申请号：US17154674
申请日：2021-01-21
申请人： MIKUNI CORPORATION
发明人： Toshiaki ISHII , Makoto KOYAMA , Daisuke TAKAYAMA , Naoki TANAKA
IPC分类号： F02D9/10 , F02D9/04
摘要： Provided is an exhaust valve device 1 for a vehicle in which a valve element 7 is supported in an exhaust passage 4 by a rotating shaft 5 axially supported by a valve body 3, a flexible joint member 16 is secured to an output shaft 13a of a motor unit 13 attached to the valve body 3, and a lower end of the flexible joint member 16 and an upper end of the rotating shaft 5 are coupled via a rigid joint member 15, in which the rigid joint member 15 includes: a sealing element 18 having a sealing surface 18a and arm portions 18c, the sealing surface 18a being coupled to one end of the rotating shaft 5 and sealing an axially supported portion of one end of the rotating shaft to prevent exhaust gas from leaking, the arm portions 18c being formed in a periphery of the sealing surface 18a; and a transmission element 19 having a spring groove 19a and engagement grooves 19b, the spring groove 19a being coupled to the end of the flexible joint member 16, the engagement grooves 19b being engaged with the arm portions 18c of the sealing element 18 to restrict relative rotation.

2. 发明申请

US20210254559A1 EXHAUST VALVE DEVICE FOR VEHICLE 有权
公开(公告)号：US20210254559A1
公开(公告)日：2021-08-19
申请号：US17154684
申请日：2021-01-21
申请人： MIKUNI CORPORATION
发明人： Toshiaki ISHII , Makoto KOYAMA , Daisuke TAKAYAMA , Naoki TANAKA
IPC分类号： F02D9/04 , F02M26/54
摘要： Provided is an exhaust valve device 1 for a vehicle in which a valve element 7 is supported to be able to be opened and closed in an exhaust passage 4 by a rotating shaft 5 axially supported by a valve body 3, a motor unit 13 is attached to the valve body 3 via a thermal insulation bracket 11, and an output shaft 13a of the motor unit 13 is coupled to the rotating shaft 5, the exhaust valve device 1 including: an outer circumferential, guide surface 10a provided at the valve body 3 and having an arc shape around an axial line C of the rotating shaft 5 at the center; and an inner circumferential guide surface 12a provided at the thermal insulation bracket 11 and brought into slide contact with the outer circumferential guide surface 10a to guide the thermal insulation bracket 11 to be secured at a prescribed securing angle to the valve body 3 around the axial line C of the rotating shaft 5 at the center.

3. 发明申请

US20210396315A1 VALVE DEVICE 有权
公开(公告)号：US20210396315A1
公开(公告)日：2021-12-23
申请号：US17197067
申请日：2021-03-10
申请人： MIKUNI CORPORATION
发明人： Toshiaki ISHII , Makoto KOYAMA , Daisuke TAKAYAMA
IPC分类号： F16J15/10 , F16J15/30 , F16J15/54
摘要： A valve device includes a body that defines a passage through which a fluid flows, a shaft that is movably supported with respect to the body and defines an axis, a valve element that is fixed to the shaft to open and close the passage; and a cylindrical bearing bush that movably supports the shaft with respect to the body, in which the bearing bush includes a mixed region in which a metal core material and expanded graphite are mixed with each other, and a first expanded graphite region made of only the expanded graphite such that the metal core material is not exposed in an inner circumferential side region in contact with an outer circumferential surface of the shaft.

4. 发明申请

US20210254561A1 EXHAUST VALVE DEVICE FOR VEHICLE 有权
公开(公告)号：US20210254561A1
公开(公告)日：2021-08-19
申请号：US17154691
申请日：2021-01-21
申请人： MIKUNI CORPORATION
发明人： Toshiaki ISHII , Makoto KOYAMA , Daisuke TAKAYAMA , Naoki TANAKA
IPC分类号： F02D9/10
摘要： An exhaust valve device for a vehicle includes: a valve element 7 axially supported by a rotating shaft 5 in a bore 4 of a valve body 3 produced through casting; sealing projections 21 and 22 integrally formed on an inner circumferential surface of the bore 4 to follow one side portion 7a and the other side portion 7b of an outer circumferential edge of the valve element 7 at a fully closed position; sealing surfaces 21a and 22a of the sealing projections 21 and 22, the right side portion 7a and the left side portion 7b of the valve element 7 at the fully closed position abutting respectively on the sealing surfaces; R-shaped corners 21b and 22b formed between the inner circumferential surface of the bore 4 and the sealing surfaces 21a and 22a; and diameter enlarged portions 25 formed in the inner circumferential surface of the bore 4 to enlarge the bore 4 that are adjacent respectively to the sealing surfaces 21a and 22a of the sealing projections 21 and 22 and correspond to lengths of the sealing surfaces 21a and 22a, and the valve element 7 has an outer shape enlarged to correspond to a height of the corners 21b and 22b on an outer circumferential side with formation of the diameter enlarged portions 25 at the fully closed position.

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